Improvement in metal-rolling machinery



P. S. BRADFORD. Metal-Rolling Machinery.

, Patented July 16, 18-78.

Jele J. .37 oral" NJEI'ERS PHOTO-LITHOGRAPHER WASHINGTON u c UNITEDSTATES PATENT QFFICE.

PELEG S. BRADFORD, OF BRIDGEWATER, MASSACHUSETTS.

IMPROVEMENT IN METAL-ROLLING MACHINERY.

Specification forming part of Letters Patent No. 205,945, dated July 16,1878; application filed January 4, 1878.

To all whom it may concern:

Be it known that I, PELEG S. BRADFORD, of Bridgewater, of the county ofPlymouth and State of Massachusetts, have invented a new and usefulImprovement in Machinery for Rolling Metal; and do hereby declare thesame to be described in the following specification and represented inthe accompanying drawings, of which- Figure l is a side elevation, Fig.2 a front view, and Fig. 3 a longitudinal section, of a rolling-machineprovided with my invention.

In reducing iron or steel by means of rolls, the process is greatlyfacilitated by using with and over the bed-roll a roll of much lessdiameter, in which case it becomes essential to employ a third andlarger roll directly over and upon the smaller roll to give to it thenecessary support.

There is, however, incident to such employment of such smaller roll adifficulty which operates to prevent it from being long used topractical advantage, such difficulty consisting in the roll readilybecoming too hot, and, in consequence thereof, being soon impaired orrendered useless.

My invention. is to preserve or keep the said smaller roll suflicientlycool to prevent it from being burned or injured by the heated metalwhile in the process of being reduced by the rolls.

To this end I combine with the rolls one or a pair of self-adjustingcoolers or water-backs, which I arrange directly against the smallerroll, in manner as represented in the accompanyin g drawings, in which-A A denote the standards for supporting the roll boxes or bearings c b.B O D are the three rolls, and E E the coolers or water-backs.

Each of these latter consists of a cast-' "on box or hollow vesselcurved concavely on its inner edge to fit to the periphery of theintermediate roll 0.

The said box or vessel E has tubular journals projecting from its ends,as shown at d d in Figs. 4. and 5, the first of such figures being a topview, and the second a longitudinal section, of the vessel. Thesejournals have bearings in two arms, F F, arranged against the innersides of the standards A A. Each of the said arms, near its upper end,is pivoted to the standard, the pivot being shown at 6. Furthermore,there is fixed to the standard, and to bear against the outer edge ofthe arm, a spring, f, such being to cause the cooler or water-back tobear closely against the roll 0.

From the above it will be seen that, owing to the means by which thecooler or waterback is supported, it not only can rise and fall with theroll 0, but will be constantly presse against it.

The intermediate roll has each of its journals supported by a pair ofguide-bearings, (r G, through which holes f f are made for the receptionof the induction-pipes i, by which the coolers or water-backs are to besupplied with cool water, which, after having performed its ofiice, isto be discharged through one or more educts or apertures, h h, in theupper part of each of such coolers or waterbacks.

Each hole f to allow of the necessary movements of the cooler, shouldhave adiameter somewhat larger than that of its pipe '2', and when thecooler is in use and has two tubular journals, one of them is to beplugged to prevent the escape of water through it.

By my arrangement of each of the coolers a bar of metal to be reducedmay be run between the intermediate roll and either of the others.

I claiml. In combination with the rolls I3 0 D, one or a pair ofcoolers, E E, substantially as described, arranged with the intermediateroll 0, in manner and provided with operative mechanism essentially asand for the purpose or purposes set forth.

2. The guide-bearings G G, provided with the holes f f, in combinationwith the three rolls B G D and one or more coolers, E E, substantiallyas described, arranged with the intermediate roll 0, in manner andprovided with inducts and educts and operative mechanism essentially asset forth.

PELEG S. BRADFORD.

YVitnesses:

R. H. EDDY, JOHN B. SNOW.

